Figure 3. aluRNA is localized to nucleoli and partially rescues α‐amanitin‐induced nucleolar dispersion.

1. CLSM images showing nucleolar co‐localization of NCL (immunofluorescence) with aluRNA (RNA FISH) but not with L1‐repeat RNA. Cells were pre‐treated in situ with RNase A or an RNase inhibitor. Nuclei were counterstained with DAPI. The signal intensity of nucleolar aluRNA was two‐fold higher compared to nucleoplasmic signal (n = 92, P‐value < 0.05, t‐test).
2. Graphs representing the average number of nucleolar bodies after microinjection of in vitro transcribed RNA into HeLa cells that were pre‐treated with α‐amanitin (50 μg/ml) for 5 h or left untreated (control) (± 95% CI. **P‐value < 0.01, n = 90, 87, 86, 83 or 86 cells, respectively). Representative CLSM images of propidium iodide‐stained RNA are shown on the right side.

Data information: Scale bars, 10 μm.

See also Appendix Fig S5, Appendix Table S4.